The North Bank or Northbank Lighthouse, is an active aid to navigation located at the mouth of the River Liffey, near Dublin, Ireland.

Built in 1882, it also affectionately called The Tea Caddy due to its architecture,[1] and has also been described as "resembling a giant mailbox on stilts".

[2] Completed in 1882, the green lighthouse consists of a square tower with a lantern room and gallery, which is supported by a series of concrete columns.

[5] A large scale replica of the lighthouse complete with a working green light was built by artist Fergal McCarthy inside the Science Gallery at Trinity College, Dublin in 2015.

It was part of the Home/Sick exhibition, McCarthy having been "fascinated for several years by the sight of the Northbank Lighthouse at the mouth of the Liffey estuary".